MIC 401 Exam 2 UPDATED QUESTIONS
AND CORRECT ANSWERS
Cocci - CORRECT ANSWER Spherical bacteria
Strep - CORRECT ANSWER A chain of cocci
Staph - CORRECT ANSWER Cluster of cocci
Bacilli - CORRECT ANSWER Rod shaped bacteria
Palisades - CORRECT ANSWER A cluster of bacilli arranged together
Vibrio - CORRECT ANSWER Bent bacillus, comma shaped
Coccobacillus - CORRECT ANSWER Short, round rod
Spirochetes - CORRECT ANSWER Corkscrew shaped bacteria
Peptidoglycan - CORRECT ANSWER 2 repeating disaccharides, NAG and NAM,
crosslinked by tetrapeptides
Gram negative - CORRECT ANSWER Thin layer of peptidoglycan between 2 bilayers
Cell wall ( gram negative ) - CORRECT ANSWER outer membrane and peptidoglycan
Periplasmic space - CORRECT ANSWER Space between the outer membrane and the
peptidoglycan
, Mycolic acid - CORRECT ANSWER Outer waxy lipid layer, very difficult for
antibiotics to penetrate
Chemotaxis - CORRECT ANSWER Bacteria move in random directions towards
chemical stimulus
Run and tumble - CORRECT ANSWER Move quickly in random direction, then
reorient towards stimulus
Pilus - CORRECT ANSWER Hair like appendage made of pilin, useful for adhesion
Conjugative pili - CORRECT ANSWER DNA transfer between bacteria
Type IV Pili - CORRECT ANSWER Movement along solid surface, impt for vibrio
cholerae
Glycoclalyx - CORRECT ANSWER Viscous, gummy layer of polysaccharides
Slime Glycocalyx - CORRECT ANSWER Loose-coating, doesn't exclude small
particles
Capsule - CORRECT ANSWER Tightly attached, and excludes small particles. Useful
for immune evasion.
R-plasmid - CORRECT ANSWER Resistance plasmid, contains genes responsible for
antibiotic resistance
F-plasmid - CORRECT ANSWER Fertility plasmid, facilitates gene exchange.
Magnetosomes - CORRECT ANSWER Contain iron, align with magnetic fields
AND CORRECT ANSWERS
Cocci - CORRECT ANSWER Spherical bacteria
Strep - CORRECT ANSWER A chain of cocci
Staph - CORRECT ANSWER Cluster of cocci
Bacilli - CORRECT ANSWER Rod shaped bacteria
Palisades - CORRECT ANSWER A cluster of bacilli arranged together
Vibrio - CORRECT ANSWER Bent bacillus, comma shaped
Coccobacillus - CORRECT ANSWER Short, round rod
Spirochetes - CORRECT ANSWER Corkscrew shaped bacteria
Peptidoglycan - CORRECT ANSWER 2 repeating disaccharides, NAG and NAM,
crosslinked by tetrapeptides
Gram negative - CORRECT ANSWER Thin layer of peptidoglycan between 2 bilayers
Cell wall ( gram negative ) - CORRECT ANSWER outer membrane and peptidoglycan
Periplasmic space - CORRECT ANSWER Space between the outer membrane and the
peptidoglycan
, Mycolic acid - CORRECT ANSWER Outer waxy lipid layer, very difficult for
antibiotics to penetrate
Chemotaxis - CORRECT ANSWER Bacteria move in random directions towards
chemical stimulus
Run and tumble - CORRECT ANSWER Move quickly in random direction, then
reorient towards stimulus
Pilus - CORRECT ANSWER Hair like appendage made of pilin, useful for adhesion
Conjugative pili - CORRECT ANSWER DNA transfer between bacteria
Type IV Pili - CORRECT ANSWER Movement along solid surface, impt for vibrio
cholerae
Glycoclalyx - CORRECT ANSWER Viscous, gummy layer of polysaccharides
Slime Glycocalyx - CORRECT ANSWER Loose-coating, doesn't exclude small
particles
Capsule - CORRECT ANSWER Tightly attached, and excludes small particles. Useful
for immune evasion.
R-plasmid - CORRECT ANSWER Resistance plasmid, contains genes responsible for
antibiotic resistance
F-plasmid - CORRECT ANSWER Fertility plasmid, facilitates gene exchange.
Magnetosomes - CORRECT ANSWER Contain iron, align with magnetic fields
